Squirrelsmith
Newbie
I get a multiple random missfire at freeway speeds and especially if towing every few months. Im ignoring it for now
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not to revive a very old thread but did you end up figuring this out? i have the exact same issue.New long block with all the same externals (plugs, wires, tune, etc.) solved my issue - so it had to be something with the block.
I'm guessing it was the valve issue mentioned earlier in this thread.
Eventually I'll pull the head to look at the #4 valve issues - but I'm guessing that was it.
Nothing was obvious from watching the engine run (#4) with the valve cover off - not a wiped cam lobe or anything- so not sure what I'll find.
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